Padhil, Ahmad, Arfandi Ahmad, Muhammad Arman, Muhammad Dafha Reza Ramadhan Saputra Ramlan, Rifdat Indratma, and Nurul Dwiana Lestari. “Re-Designing Conventional Face Mask by Using Triz (Teoriya Resheniya Izobreatatelskikh Zadatch) Method”. Journal of Management Science & Engineering Research 4, no. 1 (March 31, 2021): 1–7. Accessed April 24, 2025. https://journals.bilpubgroup.com/index.php/jmser/article/view/2714.